Profit Or Loss [Abstract]
| Concept | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 2022-01-01 to 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Profit or loss [abstract] | ||||||||||||||
| Profit (loss) [abstract] | ||||||||||||||
| Revenue | — | 
                                                681,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                1 454
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
| Other income | — | 
                                                711,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                661,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
| Raw materials and consumables used | — | 
                                                46,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                101,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
| Employee benefits expense | — | 
                                                214,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                177,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
| Depreciation and amortisation expense | — | 
                                                410,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                413,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
| Other expenses, by nature | — | 
                                                145,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                389,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
| Profit (loss) from operating activities | — | 
                                                2 194
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                1 502
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
| Gains (losses) on net monetary position | — | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                2,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | 
                                                84,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                355,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
| Profit (loss) before tax | — | 
                                                2 110
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                1 859
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
| Tax expense (income) | — | 
                                                82,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                178,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
| Profit (loss) from continuing operations | — | 
                                                2 028
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                1 681
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | — | — | — | 
| Profit (loss) | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                2 028
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                31,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1 997
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1 997
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1 633
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1 681
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                1 633
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
                                                48,000
                                                
                                                    
                                                        BGN
                                                    
                                                
                                             | 
| Earnings per share [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Earnings per share [abstract] | ||||||||||||||
| Earnings per share [line items] | ||||||||||||||
| Basic earnings per share [abstract] | ||||||||||||||
| Basic earnings (loss) per share | — | 
                                                0.0600
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                0.0500
                                                
                                             | — | — | — |